US6381426B1 - Automatic gain control for electrostatic voltmeters - Google Patents
Automatic gain control for electrostatic voltmeters Download PDFInfo
- Publication number
- US6381426B1 US6381426B1 US09/727,217 US72721700A US6381426B1 US 6381426 B1 US6381426 B1 US 6381426B1 US 72721700 A US72721700 A US 72721700A US 6381426 B1 US6381426 B1 US 6381426B1
- Authority
- US
- United States
- Prior art keywords
- gain control
- light
- resistor
- amplifier
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001419 dependent Effects 0.000 claims abstract description 9
- 230000001276 controlling effect Effects 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims abstract description 7
- 241000362773 Espirito Santo virus Species 0.000 abstract description 18
- 239000000463 material Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 8
- 230000032258 transport Effects 0.000 description 8
- 230000000875 corresponding Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000051 modifying Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003134 recirculating Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000003595 spectral Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
- G03G15/5037—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor the characteristics being an electrical parameter, e.g. voltage
Abstract
Description
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/727,217 US6381426B1 (en) | 2000-11-30 | 2000-11-30 | Automatic gain control for electrostatic voltmeters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/727,217 US6381426B1 (en) | 2000-11-30 | 2000-11-30 | Automatic gain control for electrostatic voltmeters |
Publications (1)
Publication Number | Publication Date |
---|---|
US6381426B1 true US6381426B1 (en) | 2002-04-30 |
Family
ID=24921794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/727,217 Expired - Lifetime US6381426B1 (en) | 2000-11-30 | 2000-11-30 | Automatic gain control for electrostatic voltmeters |
Country Status (1)
Country | Link |
---|---|
US (1) | US6381426B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6998832B1 (en) * | 2004-02-26 | 2006-02-14 | Hd Electric Company | High-voltage indicating apparatus and method |
US20060245174A1 (en) * | 2004-10-12 | 2006-11-02 | Tir Systems Ltd. | Method and system for feedback and control of a luminaire |
US20070153026A1 (en) * | 2004-10-12 | 2007-07-05 | Ian Ashdown | Control apparatus and method for use with digitally controlled light sources |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106869A (en) * | 1976-11-26 | 1978-08-15 | Xerox Corporation | Distance compensated electrostatic voltmeter |
US4417804A (en) * | 1981-06-19 | 1983-11-29 | Xerox Corporation | High voltage comparator for photoreceptor voltage control |
US5243292A (en) | 1991-10-07 | 1993-09-07 | Xerox Corporation | Electrostatic measuring tuning fork and means for limiting mechanical amplitude thereof |
US5950040A (en) | 1998-05-22 | 1999-09-07 | Xerox Corporation | Feedback control system for controlling developability of a xerographic imaging device |
-
2000
- 2000-11-30 US US09/727,217 patent/US6381426B1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4106869A (en) * | 1976-11-26 | 1978-08-15 | Xerox Corporation | Distance compensated electrostatic voltmeter |
US4417804A (en) * | 1981-06-19 | 1983-11-29 | Xerox Corporation | High voltage comparator for photoreceptor voltage control |
US5243292A (en) | 1991-10-07 | 1993-09-07 | Xerox Corporation | Electrostatic measuring tuning fork and means for limiting mechanical amplitude thereof |
US5950040A (en) | 1998-05-22 | 1999-09-07 | Xerox Corporation | Feedback control system for controlling developability of a xerographic imaging device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6998832B1 (en) * | 2004-02-26 | 2006-02-14 | Hd Electric Company | High-voltage indicating apparatus and method |
US20060245174A1 (en) * | 2004-10-12 | 2006-11-02 | Tir Systems Ltd. | Method and system for feedback and control of a luminaire |
US20070108846A1 (en) * | 2004-10-12 | 2007-05-17 | Ian Ashdown | Method and system for feedback and control of a luminaire |
US20070153026A1 (en) * | 2004-10-12 | 2007-07-05 | Ian Ashdown | Control apparatus and method for use with digitally controlled light sources |
US7573209B2 (en) | 2004-10-12 | 2009-08-11 | Koninklijke Philips Electronics N.V. | Method and system for feedback and control of a luminaire |
US7573210B2 (en) | 2004-10-12 | 2009-08-11 | Koninklijke Philips Electronics N.V. | Method and system for feedback and control of a luminaire |
US7738002B2 (en) | 2004-10-12 | 2010-06-15 | Koninklijke Philips Electronics N.V. | Control apparatus and method for use with digitally controlled light sources |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0909995B1 (en) | A machine set up procedure using multivariate modeling and multiobjective optimization | |
US5884118A (en) | Printer having print output linked to scanner input for automated image quality adjustment | |
US5708916A (en) | Developed mass per unit area controller without using electrostatic measurements | |
US5749021A (en) | Developed mass per unit area (DMA) controller to correct for development errors | |
US5436705A (en) | Adaptive process controller for electrophotographic printing | |
US5717978A (en) | Method to model a xerographic system | |
US5281793A (en) | Apparatus for positioning a temperature sensing element in temperature sensing relationship with a moving object | |
US5710958A (en) | Method for setting up an electrophotographic printing machine using a toner area coverage sensor | |
US5754918A (en) | Electrostatic control with compensation for coupling effects | |
US5243383A (en) | Image forming apparatus with predictive electrostatic process control system | |
US5749019A (en) | Look up table to control non-linear xerographic process | |
US5227815A (en) | Color registration test pattern | |
US5950040A (en) | Feedback control system for controlling developability of a xerographic imaging device | |
US5448277A (en) | Virtual process controls test pattern for electronic printers | |
US5839022A (en) | Filter for reducing the effect of noise in TC control | |
CA2200238C (en) | Photo induced discharge characteristics (pidc) controller | |
US6021285A (en) | Sensorless quality control apparatus used upon malfunction of a quality control sensor and method therefor | |
US7313337B2 (en) | Method and apparatus for sensing and controlling residual mass on customer images | |
US6185385B1 (en) | Apparatus and method for online establishment of print control parameters | |
US5666593A (en) | Resistance Temperature Detector (RTD) sensor for a heat and pressure fuser | |
US8147026B2 (en) | Image quality matching in a mixed print engine assembly system | |
US6381426B1 (en) | Automatic gain control for electrostatic voltmeters | |
EP1107070B1 (en) | Method and apparatus for adaptive black solid area estimation in a xerographic apparatus | |
EP0519710B1 (en) | Image forming apparatus having image forming condition controller responsive to test pattern image | |
US6321043B1 (en) | Control of halftone and solid area image quality by way of a halftone discharge ratio |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: XEROX CORPORATION, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WERNER, ALAN J., JR.;BORTON, MICHAEL D.;SCHEUER, MARK A.;REEL/FRAME:011329/0517 Effective date: 20001129 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: BANK ONE, NA, AS ADMINISTRATIVE AGENT, ILLINOIS Free format text: SECURITY INTEREST;ASSIGNOR:XEROX CORPORATION;REEL/FRAME:013153/0001 Effective date: 20020621 |
|
AS | Assignment |
Owner name: JPMORGAN CHASE BANK, AS COLLATERAL AGENT, TEXAS Free format text: SECURITY AGREEMENT;ASSIGNOR:XEROX CORPORATION;REEL/FRAME:015134/0476 Effective date: 20030625 Owner name: JPMORGAN CHASE BANK, AS COLLATERAL AGENT,TEXAS Free format text: SECURITY AGREEMENT;ASSIGNOR:XEROX CORPORATION;REEL/FRAME:015134/0476 Effective date: 20030625 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FPAY | Fee payment |
Year of fee payment: 12 |
|
AS | Assignment |
Owner name: XEROX CORPORATION, NEW YORK Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:JPMORGAN CHASE BANK, N.A.;REEL/FRAME:034590/0513 Effective date: 20061204 Owner name: XEROX CORPORATION, NEW YORK Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:BANK ONE, NA;REEL/FRAME:034590/0412 Effective date: 20030625 |